#include <REGX52.H>
#include <INTRINS.H>

unsigned char NixieTable[] = {0x3F,0x06,0x5B,0x4F,0x66,
								0x6D,0x7D,0x07,0x7F,0x6F};

								
								
void Delay(unsigned char xms)		//@11.0592MHz
{
	unsigned char i, j;

	while(xms--)
	{
		_nop_();
		i = 2;
		j = 199;
		do
		{
			while (--j);
		} while (--i);
	}
}

								
								
void Nixie(unsigned char Location,Number)
{
	switch(Location)
	{
		case 1:P2_4 = 1;P2_3 = 1;P2_2 = 1;break;
		case 2:P2_4 = 1;P2_3 = 1;P2_2 = 0;break;
		case 3:P2_4 = 1;P2_3 = 0;P2_2 = 1;break;
		case 4:P2_4 = 1;P2_3 = 0;P2_2 = 0;break;
		case 5:P2_4 = 0;P2_3 = 1;P2_2 = 1;break;
		case 6:P2_4 = 0;P2_3 = 1;P2_2 = 0;break;
		case 7:P2_4 = 0;P2_3 = 0;P2_2 = 1;break;
		case 8:P2_4 = 0;P2_3 = 0;P2_2 = 0;break;
	}
	P0 = NixieTable[Number];	
	Delay(1);
	P0 = 0x00;
}


int main()
{
	
	while(1)
	{
		Nixie(1,1);
//		Delay(1);
		Nixie(2,2);
//		Delay(1);
		Nixie(3,3);
//		Delay(1);
	}
	
}